Ca+O2

The reaction between calcium (Ca) and oxygen (O₂) leads to the formation of calcium oxide (CaO). This is a synthesis reaction where two elements combine to form a compound. The balanced equation for this reaction is:

\[ 2 \, \text{Ca} + \text{O}_2 \rightarrow 2 \, \text{CaO} \]

In this reaction, two moles of calcium react with one mole of oxygen to produce two moles of calcium oxide. Calcium oxide is an ionic compound that is commonly known as quicklime. It's important in various industrial processes, including the production of cement and in metallurgy.

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